On Fri, Aug 27, 2004 at 11:04:42AM -0700, Matt Roper wrote:
> On Fri, Aug 27, 2004 at 10:28:27AM -0700, Ken Bloom wrote:
> ...
> > Is there a way to identify the directory that contains the currently
> > running script in bash? i.e. if I'm running /home/bloom/bin/foo in
> > /bin/bash, and pwd is /home/bloom, how can I programmatically get
> > either /home/bloom/bin/foo or /home/bloom/bin to refer to it?
> > (This would be particularly nice when using calling `java -classpath`
> > from a shell script wrapper)
>
> $0 has already been suggested, but looking at the bash reference manual,
> it sounds like $_ might also be useful:
>
> (An underscore.) At shell startup, set to the absolute filename of
> the shell or shell script being executed as passed in the argument
> list. Subsequently, expands to the last argument to the previous
> command, after expansion. Also set to the full pathname of each
> command executed and placed in the environment exported to that
> command. When checking mail, this parameter holds the name of the
> mail file.
Doesn't seem to do it.
#!/bin/bash
#next line must be first line
SCRIPTPATH=$_
echo $SCRIPTPATH
echo $(dirname $SCRIPTPATH)
[bloom@kabloom ~]$ bash test/test2
bash
.
[bloom@kabloom ~]$ test/test2
/bin/bash
/bin
> I haven't actually tried that, but it sounds like you'd need to capture
> it as the first command of your shell script.
>
> > Are there ways to do this in other scripting languages (e.g. perl)?
>
> This should work in Perl:
>
> #!/usr/bin/perl
> use FindBin;
>
> print $FindBin::Bin, "\n";
That works perfectly.
Maybe I'll just rewrite scripts that need that in Perl.
--Ken Bloom
--
I usually have a GPG digital signature included as an attachment.
See http://www.gnupg.org/ for info about these digital signatures.
My key was last signed 08/18/2004. If you use GPG *please* see me about
signing the key. ***** My computer can't give you viruses by email. ***